Rheological behavior of amine-functionalized liquid polybutadiene
Bibliographic record
Abstract
Varying quantities of hydrogen-bonding stickers (amines) are introduced to liquid polybutadiene through the hydroaminoalkylation method. Amination significantly affects both the glassy and rubbery dynamics of these materials. The amination process results in a delay of the transition from the glassy to rubbery state, attributed to the lower mobility of hydrogen-bonding sites compared to the backbone segments. As the density of stickers increases, a liquid to solid transition is observed, and the emergence of a plateau rubbery modulus due to hydrogen bonding between amine functional groups. Rheological analysis reveals a failure in time-temperature superposition near the gel point. This failure is due to the decrease in the intensity of the elastically effective network strands with rising temperature from the weakening of the strength of hydrogen bonds. Moreover, the terminal relaxation timescale lengthens considerably as the degree of gelation increases, indicating the impact of many cooperative intermolecular associations. Compared to high molecular weight polybutadiene, the functionalized low molecular weight polybutadienes possess similar plateau modulus, highlighting the effectiveness of post-polymerization modifications in enhancing the mechanical properties of the amine-functionalized low molecular weight polybutadiene.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".